CO2混合工质的气液相平衡的混合规则对比与预测研究

吴子睿,孙瑞,石凌峰,田华,王轩,舒歌群

A comparative and predictive study of the mixing rules for the vapor-liquid equilibria of CO2-based mixtures

Zirui WU,Rui SUN,Lingfeng SHI,Hua TIAN,Xuan WANG,Gequn SHU

表4 CO2+小分子烷烃二元混合物的优化结果与预测结果的比较

Table 4 Comparison of the optimization results and prediction results of CO2 + small molecule alkane binary mixture

T/K k12(最优值) vdW k12(平均值) vdW(预测) AARD(p) AAD(y) AARD(p) AAD(y) CO2+propane[4,26] 273.15 0.128 1.139% 0.0032 0.130 1.240% 0.0038 283.15 0.130 1.168% 0.0043 1.168% 0.0043 293.15 0.129 0.560% 0.0033 0.562% 0.0035 303.15 0.125 0.482% 0.0029 0.855% 0.0041 313.15 0.132 0.302% 0.0031 0.404% 0.0026 323.15 0.133 0.213% 0.0019 0.491% 0.0012 平均 0.130 0.644% 0.0031 0.770% 0.0032 CO2+n-butane[20-21] 311.08 0.123 1.075% 0.0155 0.132 1.091% 0.0181 325.00 0.126 0.565% 0.0079 0.949% 0.0105 344.24 0.126 0.628% 0.0089 0.697% 0.0091 357.75 0.134 1.063% 0.0068 1.895% 0.0091 377.53 0.149 1.443% 0.0054 1.539% 0.0052 平均 0.132 0.644% 0.0089 1.234% 0.0104 CO2+ isobutane[22-23] 270.00 0.127 2.006% 0.0023 0.125 2.078% 0.0020 280.00 0.127 2.190% 0.0044 2.251% 0.0045 310.92 0.115 0.780% 0.0061 1.725% 0.0094 344.24 0.123 0.861% 0.0107 0.850% 0.0110 369.24 0.135 0.799% 0.0133 1.217% 0.0133 平均 0.125 1.327% 0.0074 1.624% 0.0080